Self and thomas neely



(No Model.) 3 Sheets-Sheet 1. A. MARLAND.

NUT MACHINE.

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(No Model.) 3 Sheets-Sheet. 2. A. MARLAND.

NUT MACHINE. No. 257,138. Patented Apr.25,1882.

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(No Model.) 3 Sheets-Sheet 3.

A. MARLAND.

NUT MACHINE. NQ. 257,138. Patented Apr.25, 1882.

S" a S i i WEST? S @W J/JM 'Mw INVENTOE v%%mma\ BY Wm ATTORNEYS.

UNITE STATES PATENT OFFICE.

ALFRED MARLAND, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO HIM- SELF ANDTHOMAS NEELY, OF SAME PLACE.

NUT-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 257,138, dated April 25,1882.

Application filed August 12, 188i. (No model.)

To all whom it may concern Be it known that I, ALFRED MARLAND, ofPittsburg, in the county ofAllegheny and State of Pennsylvania,haveinvented a newaud useful Improvement in Nut-Machines, of which thefollowing is a full, clear, and exact specification.

This invention relates to nut-machines of the class shown and describedin Letters Patent N0.172,272, which were granted to me January 18, 1876,which machines are adapted to cut the blanks of proper length from a baror rod and compress them in a suitable formingdie, and at 'the same timeaxially punch the blanks in the lineof the length of the bar or rod fromwhich they are cut and transversely to the plane of the out, and. thenautomaticallydischarge the com pleted product from the forming-die.

My present improved machine is composed of a forming-die and fourprincipal tool-carrying parts-viz., two cross-heads carrying hollowcompressingmandrels, (through which mandrels the punches are adapted tomove,) a cross-head carrying the main punch, and the transverselymovingknife-all of which are preferably operated through connecting rods,yokes, and levers from suitably constructed and arranged cams upon asingle main driving-shaft.

The invention consists of giving to these parts of the machine certainindividual and relative movements, whereby the nuts are more perfectlyformed and the machine rendered more efficient for its purpose thanheretofore.

The invention also consists of the details of construction and of thecombinations and arrangements of the parts, all as hereinafter morefully described. A

In the accompanying drawings, Figure 1 is a plan view of my improvednut-machine. Fig. 2 is a side elevation thereof. Fig. 3 is a centrallongitudinal sectional elevation taken on the line as w of Fig. 1. Fig.4 is a cross-sectional elevation taken on the line 3 y of Fig. 1. Fig. 5is a cross-sectional elevation taken on the line 2 z of Fig. 1. Fig. 6is a sectional elevation on the line 2 z of Fig. 1; andFigs. 7, 8, and 9are detail views, showing respectively an end elevation of the auxiliarymandrel and punch and feeding-tube yoked together, a side elevation ofthe forming-die, and an end view of the main mandrel and punch, allremoved from the machine.

Similar letters of reference indicate corre- L sponding parts.

The frame-work A may be of any suitable construction for carrying themoving parts of the machine. In and near oneend of the framework isjournaled the main shaft B, and upon the frame-work, and near the otherend thereof", is secured the die-block O, in which is placed theforming-die c, in which the blanks are compressed, shaped, and punched.Between the dieblock G and the front end of the framework-that is, theend opposite to the one in F, which is moved by the cam G, fixed uponthe end of the main shaft.

In the cutting-bar is also formed, in line with 1 the die 0, the opening0, in which the hollow auxiliary mandrel H is. placed. This mandrel isgiven a backward and forward movement by means of the cross-head E,which crosshead is reciprocated by the cams E E upon the main shaftmoving in the yokes I I, which are connected to the ends of thecross-head by the connecting-rods e 0. Besides the reciprocatingmovementwhich the cross-head E gives to the mandrel H, the same is givena lateral movement by the cutting-bar, the mandrel being placed and heldin the opening 0 thereof. In order to accommodate this lateral move-'ment and at the same time to connect the mandrel to the cross-head, sothat the movement of the cross-head will be communicated to the mandrel,the cross-head is formed-with the elongated opening f, and the top andbottom of said openingwith the elon gated gutters f j" and the head H ofthe mandrel is formed with the collars h h, which fit upon the waysff,formed by said gutters, as shown in Fig. 6.

In thehollow mandrelH is placed the headed punch J, which is movedthrough the mandrel, for the purposes hereinafter described, and in theelongated opening in the cross-head is placed the collared feed-tube J,which is yoked to the mandrel H by the yoke j, and is thus movedlaterally with the mandrel, so as to register at the proper time withthe die 0 for feeding the rod or bar of iron to the machine.

Between the die-block G and the main shaft B is placed the cross head K,which carries the main hollow mandrel k, and the cross-head L, whichcarries the main punch Z, which latter moves through the said mainmandrel. The cross-head K is given a reciprocating motion by means ofthe connecting-rods 7c 7c and the yokes K K, which fit over the cams M Mupon the shaft, and the cross-head L is given a reciprocating motion bymeans of the yoke L, (which is preferably made integral with thecross-head,) placed over the cam N upon the main shaft.

The cams M M, G, and E E are constructed 'and arranged with respect toother parts to operate them as follows: The blank bar is passed throughthe feed-tube into the formingdie 0 and then out transversely by theknife D. The mandrel H, with its punch J, and the mandrel k, with itspunch l, are caused to enter simultaneously at opposite ends of theforming-die beforethecross-head E reaches the end of its movement, butat differential speed, so that the punch lwill be forced through thehollow mandrel and the two punches be made to pierce the blank fromopposite directions toward the center while the maudrels compress theends. After the punches have met in the middle of the blank the punchlfollows the punch J on its withdrawal far enough to remove theintermediate fin. This punch,in conjunction with the punch J, piercesthe blank, forming an axial opening through it by displacement of themetal of the blank inthe line of the feed and at right angles to theplane of the cutting of the blank from the rod. At this time the twomandrels are approaching each other with great force, compressingtheblank endwise, causing it to be shortened and expanded and to take theoutline of the walls of the particular form of die being used. After theends of the punches have met in the blank, in order to remove any finsor thin pieces of metal which otherwise would remain in the nut at theplace of meeting, I prefer to so constructtheeams M M as to causethemain punch die a sufficient distance to push the nut out of the die.

It will be understood that at the time the main mandrel is movingforward to expel the nut the knife is moved back sothat the cutawayportion 61 thereof will come in position to permit the nut to come outof the die and fall below the machine. It will also be understood thatat this time the main punch is being withdrawn from the nut and from themandrel. The nut having now been completed and cleared from theforming-die, the main mandrel k is brought rapidly back to place, sothat all of the parts are at their original position again, ready torepeat the operation.

In order that nuts of different sizes and forms may be produced by thismachine, I provide interchangeable dies of different sizes and forms andinterchangeable mandrels to correspond; and in order that nuts ofdifferent thicknesses may be madeIprovide collars to be placed upon thepunch 1, between the cross-heads K and L, as shown at p, of difi'erentlengths; or any similar device might be used for this purpose to causethe cross-head K to have greater or less movement for the thickness ofnut desired to be made.

This machine can be used for the manufacture of boiler, tank, and otherkinds of rivets, and also for making bolt-blanks. When it is desired tochange the machine for making rivets andbolt-blanks it is only necessaryto take out both of the punches, change the forming-die for one ofcylindrical form of the proper diameter for the size of rivet orboltblank desired, and cut the form of head required on the auxiliarymandrel, which must be of cylindrical form, as also must be the mainmandrel which regulates the length of feed and delivers the product fromthe die. The front part of the forming-die must be enlarged, so as toallow the head to be made of-any shape and as large as desired, and themandrel must of course be correspondingly enlarged. The main mandrel kis at no time entirely withdrawn from the forming-die, but at all timesforms a stop to regulate the feed of the rodor bar, so that the blankswill always be uniform and of just the right length. By displacing thematerial of the blank for forming the central opening through the nutinstead of punching thg material out a great savin g of material isgained. Besides, this method facilitates the conformation of theexterior of the blank to the walls of the die; but the punch J may bedispensed with, if it is desired to punch the metal outof the blankinstead of forming the opening by displacing the metal.

In making nuts or bolts of large size two knives operating fromdifierent sides of the machine may be used for severing the blanks fromthe rod or bar.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The combination, with thestationaryforming-die c, of the knife-bar D, punches J l, and

ICO

hollow mandrels H 70, arranged and operating said tube and mandrel beingyoked together,

together as described.

2. The combination, with the knife D, provided with the openings 0 d andcutting-edge 5 d, the lever F, and cam G, of the mandrel H, thecross-head E, rods 0 e, yokes II, and earns E E, as and for the purposeSpecified.

3. The cross-head E, provided with the openingf, gutters ff, and ways ff in combi- IO nation with the collared feed-tube J and the mandrel H,having head H and collars h h,

for the purpose specified.

4. The combination, with the cross-head K, carrying hollow mandrel k,and the cross-head 15 L, carrying punch l, of the connecting-rods k,yokes K L, and cams M N, as and. for the purpose specifiedl ALFREDMARLAND. Witnesses:

FRANK W. SMITH, JOHN C. SHUMAKER.

